Response of parasitoids to invasive pest Phenacoccus manihoti Matile-Ferrero (Hemiptera: Pseudococcidae) on cassava crop in Bali, Indonesia

2020 ◽  
Vol 21 (10) ◽  
Author(s):  
I WAYAN SUPARTHA ◽  
I KADEK WISMA YUDHA ◽  
PUTU ANGGA WIRADANA ◽  
I WAYAN SUSILA
Keyword(s):  
Population Distribution ◽  
Diversity Index ◽  
Invasive Pest ◽  
Phenacoccus Manihoti ◽  
Dominance Index ◽  
Parasitization Rate ◽  
A Value ◽  
Observation Method ◽  
Index Value ◽  
Cassava Crop

Abstract. Supartha IW, Yudha IKW, Wiradana PA, Susila IW. 2020. Response of parasitoids to invasive pest Phenacoccus manihoti Matile-Ferrero (Hemiptera: Pseudococcidae) on cassava crop in Bali, Indonesia. Biodiversitas 21: 4543-4549. Phenacoccus manihoti Matile-Ferrero (Hemiptera: Pseudococcidae) is an invasive pest that entered Indonesia in 2010 and attacks cassava plants, especially in Bali Province. This study aimed to identify species and establish the population distribution mapping, community structures (diversity, abundance, and dominance), and parasitization rate on cassava crops in Bali. This study conducted with a field observation method by taking infested shoots of cassava plants by P. manihoti purposively in the field. The cassava mealybug that was present in the leaves or shoots were kept in the laboratory until the parasitoid appeared. The results showed that four species of parasitoids were found to respond to invasive pest, namely Anagyrus lopezi (Encyrtidae), Acerophagus sp. (Encyrtidae), Blepyrus sp. (Encyrtidae) and Encarsia sp. (Aphelinidae). Structurally the parasitoid community had a low abundance (R1 = 0.50–0.87) and low diversity index value (H'= 0.27-0.28). While the parasitoid dominance index was in the moderate category with a value D = 0.33–0.59 in Bangli, Klungkung, Badung, Tabanan, and Buleleng Districts. But it had high dominance index values in Gianyar, Denpasar, Jembrana, and Karangasem Districts with a value D = 0.62-0.72. The three species of parasitoid spread evenly in all districts and cities in Bali according to the host distribution map, namely P. manihoti on cassava crop. The four parasitoids showed varying parasitic levels in the field with the highest parasitization rate was A. lopezi followed by Acerophagus sp., Blepyrus sp., and Encarsia sp.

scholarly journals KEANEKARAGAMAN JENIS KUPU-KUPU PADA LIMA TIPE HUTAN DI AREAL PT. HUTAN KETAPANG INDUSTRI KALIMANTAN BARAT

2019 ◽  
Vol 7 (3) ◽  
Author(s):  
Jogi Yoepi Sinaga ◽  
Slamet Rifanjani ◽  
Ahmad Yani
Keyword(s):  
Diversity Index ◽  
Abiotic Factors ◽  
Wealth Index ◽  
Butterfly Species ◽  
Forest Types ◽  
Habitat Types ◽  
Species Diversity Index ◽  
A Value ◽  
Observation Method ◽  
Index Value

Butterflies are species of insect found in all types of habitats. Butterflies can be used as bio-indicators of environmental change because butterflies are very sensitive to biotic and abiotic factors. The aim of this study to obtain data the diversity of butterfly species in several habitat types in the PT.Hutan Ketapang Industri. This study used observation method with a sweeping that is using insect nets and researchers are free to explore the area randomly for a specified time. This research was conducted in 5 Habitats, kerangas forest, peat swamp, lowland dipterocarps, riparian and wetlands. Five forest types are selected based on the density and diversity of forest vegetation. The results found 14 species with a total of 316 individuals. Based on the calculation of species diversity index of butterflies in five locations of 2.54212, shows that the diversity is classified as moderate and has an abundance index value of 0.963289 indicates that the abundance is classified as high. Then obtained a value of species wealth index of 2.75651 is classified as moderate and has a value of dominance index of 0.0868651 indicates that there is no dominant typeKeywords:  butterfly, diversity, indicator habitat, bioindicator

scholarly journals Kualitas Air dan Struktur Komunitas Plankton di Perairan Pantai Lovina Kabupaten Buleleng Provinsi Bali

2018 ◽  
Vol 5 (1) ◽  
pp. 109
Author(s):  
Irene Yolanda Br Ginting ◽  
I Wayan Restu ◽  
Dewa Ayu Angga Pebriani
Keyword(s):  
Dissolved Oxygen ◽  
Diversity Index ◽  
Plankton Community ◽  
Zooplankton Abundance ◽  
Marine Biota ◽  
Dominance Index ◽  
Phytoplankton Diversity ◽  
Average Value ◽  
Observation Method ◽  
Index Value

Lovina Beach is one of the beaches visited by many foreign and domestic tourists. Lovina Beach has a tourism spot and a vast area of marine biota cultivation. Life of biota in the waters of Lovina Beach is affected by conditions of beach waters. The research purpose was to know the correlation between waters quality and plankton in Lovina Beach by using observation method. The research was done on February until March 2017. Species of fitoplankton species from all three stations was dominated by Lyngbya sp. with abundance of 78 ind/l. The average value of the phytoplankton diversity index found was 1.7706. The average value of phytoplankton uniformity index is 0.9882 while the value of phytoplankton dominance index is 0.1737. The average value of the zooplankton diversity index found is 1.7311. The average value of the zooplankton uniformity index is 0.8896 while the zooplankton dominance index value is 0.2125. The result of the measurement of water quality is temperature parameter in Lovina Beach ranged from 27.6 - 28.9 0C, brightness ranged between 4.7 - 6 m, salinity of 25.3 - 27 ppt, DO (Dissolved Oxygen) ranged between 4 - 4 , 7 Mg / L, the pH ranged from 8.5 to 8.6, the nitrate ranged from 0.0081-00087 Mg/L and the phosphate ranged from 0.016 to 0.027 Mg / L. So, it can be concluded that the waters of Lovina Beach has the highest abundance of plankton that is the type of zooplankton, the level of plankton community structure in Lovina Beach waters is moderate.ppt, DO (Dissolved Oxygen) 4 – 4,3 Mg/l, pH 8,5 – 8,6, nitrate 0,0081 – 0,0087 Mg/l and phosphate 0,016 – 0,027 Mg/L. The structure of plankton community in Lovina coastal according of phytoplankton abundance categorized in oligotropic, while according of zooplankton abundance categorized in moderate (mesotropic).

scholarly journals Karakteristik Morfologi dan Kelimpahan Populasi Parasitoid (Hymenoptera) pada Hama Invasif Kutu Putih Ubi Kayu, Phenacoccus manihoti Matile-Fererro (Hemiptera: Pseudococcidae) di Bali

2020 ◽  
Vol 10 (2) ◽  
pp. 178
Author(s):  
I KADEK WISMA YUDHA ◽  
I WAYAN SUPARTHA ◽  
I WAYAN SUSILA
Keyword(s):  
Morphological Characteristics ◽  
Distribution Patterns ◽  
Invasive Pest ◽  
Phenacoccus Manihoti ◽  
Invasive Pests ◽  
Cassava Mealybug ◽  
Parasitoid Population ◽  
Observation Method ◽  
Abundance And Distribution ◽  
Cassava Crop

Morphological Characteristics and Populations Abundance of Parasitoid (Hymenoptera) on Invasive Pests Cassava Mealybug, Phenacoccus manihoti Matile-Fererro (Hemiptera: Pseudococcidae) in Bali. This study aims to know the morphological characteristics of parasitoid, population abundance and distribution patterns of parasitoid associated with P. manihoti on cassava crop in Bali. The study was conducted on all cassava crop in Bali with a field observation method that was determined by taking shoots of cassava plants attacked by cassava mealybug P. manihoti, then cassava mealybug P. manihoti were nurtured, then observation was carried out every day until parasitoid appeared and being identified. The results of the study showed that there were three dominant types of parsitoid that were found to be associated with invasive pest P. manihoti, namely Anagyrus lopezi, Acerophagus papayae and Blepyrus insularis. The abundance of parasitoid populations was dominated by parasitoid A. lopezi with a range of values 48.6–81.8%. Then followed by parasitoid A. papayae 7.7 - 37.1%, and B. insularis 3.4 - 14.3%. The distribution pattern of parasitoid varies in each species, parasitoid A. lopezi spreads in groups categories, Parasitoid A. papayae and B. insularis spread random-regulary on cassava crop throughout on each of the Regencies in Bali.

scholarly journals Dominansi dan Diversitas Lamun dan Makrozoobenthos pada Musim Pancaroba di Pantai Bama, Taman Nasional Baluran, Situbondo [Dominance and Diversity of Seagrass and Macrozoobenthos on Transition Season in Bama Beach, Baluran National Park, Situbondo]

2019 ◽  
Vol 8 (1) ◽  
pp. 36
Author(s):  
Mohammad Faizal Ulkhaqa ◽  
Sapto Andriyono ◽  
Muhammad Hanif Azhara ◽  
Hapsari Kenconojatia ◽  
Daruti Dinda Nindarwi ◽  
...  
Keyword(s):  
National Park ◽  
Diversity Index ◽  
Line Transect ◽  
Dominance Index ◽  
Transition Season ◽  
A Value ◽  
Low Diversity ◽  
The One ◽  
Index Value ◽  
Dry And Rainy Seasons

AbstrakLamun merupakan tanaman berbiji terbuka yang mampu tumbuh dan beradaptasi dengan lingkungan bersalinitas tinggi serta dapat berasosiasi dengan benthos. Keberadaan lamun di perairan merupakan salah satu indikator tingkat kesuburan dan produktivitas perairan. Terdapat perbedaan dominansi antara musim hujan dan musim kemarau, sehingga enelitian ini bertujuan untuk mengidentifikasi dan menghitung dominansi dan keanekaragaman lamun dan makrozoobenthos pada musim pancaroba di Pantai Bama, TN Baluran, Situbondo. Metode penelitian yang digunakan yaitu line transect quadran dengan 5 line transek quadran yang masing-masingnya dipasang 5 plot transek. Ditemukan jenis lamun yang memiliki nilai kelimpahan tertinggi di Pantai Bama, TN Baluran pada musim pancaroba yaitu C. serrulata dengan nilai 48,90% , dan makrozoobenthos dari genus Holothuria dengan nilai 52,06%. Nilai Indeks dominansi (D) mengkategorikan Pantai Bama, TN Baluran dalam perairan dengan dominansi sedang. Sedangkan berdasarkan Indeks keanekaragaman (H’) mengkategorikan Pantai Bama, TN Baluran dalam perairan dengan keanekaragaman rendah. Musim peralihan berpengaruh terhadap jenis, kelimpahan relatif, indeks dominansi dan indeks keanekaragaman lamun dan makrozoobenthos di Pantai Bama, TN Baluran dibandingkan musim kemarau dan hujan. Perlu dilakukan survei secara berkala untuk mengetahui keanekaragaman organisme yang berkaitan dengan produktivitas perairan. AbstractSeagrass is the one of plants that can grow and adaptataion with high salinity environment and associated with benthos. Seagrass presence that indicate the productivity and prosperity in waters environtment. Found a different dominance between rainy season and dry season, so The aims of this study to identify and count dominance and diversity of seagrass and macrozoobenthos on the transition season in Bama Beach, TN Baluran, Situbondo. The method was used is line transect quadran with 5 quadran each of which installed 5 plot transect. Seagrass species was founded that have the highest abundance values in Bama Beach, TN Baluran the transitional season is C. serrulata with a value of 48.90%, and the macrozoobenthos that found from genus Holothuria with a value of 52.06%. Dominance index value (D) categorize Bama Beach, TN Baluran with moderate dominance. While based on the diversity index (H ') categorizes Bama Beach, TN Baluran with low diversity. Transitional seasons affect the type, relative abundance, dominance index and seagrass diversity index and macrozoobenthos in Bama Beach, TN Baluran than the dry and rainy seasons. Needed to investigate the diversity of organism that related to primary produktivity.

scholarly journals Keragaman Plankton dan Kondisi Perairan Tambak Intensif dan Tradisional di Probolinggo Jawa Timur

Biosfera ◽  
2015 ◽  
Vol 32 (2) ◽  
pp. 83 ◽  
Author(s):  
Utojo Utojo
Keyword(s):  
Suspended Solids ◽  
Biological Diversity ◽  
Diversity Index ◽  
Cell Counting ◽  
Community Stability ◽  
Biological Index ◽  
Dominance Index ◽  
Lugol Solution ◽  
Index Value ◽  
Brackishwater Pond

This study aims to estimate the wealth and stability of traditional and intensive brackishwater pond waters through biological index calculation (diversity, uniformity and dominance of plankton) in traditional and intensive brackishwater pond waters of Probolinggo Regency, East Java Province. Sampling plankton and water from the site, considered to represent the diversity of plankton and water stability of traditional and intensive brackishwater pond. Plankton was collected using a plankton net no. 25, then preserved using 1% lugol solution. Measurement of water quality variables include temperature, salinity, dissolved oxygen and pH, whereas the laboratory analyzes that Total Organic Matter (TOM), NO2, NO3, NH3, PO4, Total Suspended Solids (TSS), and Fe. Plankton identification using microscope and calculation with cell counting method. The results of analysis of plankton in intensive brackishwater pond waters are obtained as much as 23 genera consisting of 16 genera of phytoplankton were included into three classes, namely Bacillariophyceae as much as 5 genera, Cyanophyceae 3 genera, Dinophyceae and Chlorophyceae, each of the four genera, whereas zooplankton consisting of 7 genera are included into two classes, namely Crustaceae 6 genera and Rotatoria 1 genus. In traditional brackishwater pond earned as much as 13 genera consisting of 8 genera of phytoplankton were included into Bacillariophyceae 5 genera, Cyanophyceae 2 genera, and Dinophyceae 3 genera, whereas zooplankton consisting of three genera are included into class Crustaceae 2 genera and Rotatoria 1 genus. Plankton abundance in intensive brackishwater pond ranges 702 - 4269 ind./L, diversity index of 0.26 -2.38, uniformity index of 0.10 - 1.5, and dominance index of 0.02 - 0.68. In traditional brackishwater pond have an abundance of plankton range 134 - 776 ind./L, diversity index of 0.10 - 1.97, uniformity index of 0.08 - 1.0, and dominance index of 0.01 - 0.75. Traditional and intensive brackishwater pond waters condition still within the limits that can be tolerated by the culture organism. Based on the index value of biological, diversity of genus in the intensive brackishwater pond is relatively higher than traditional brackishwater pond and the community stability moderate, whereas traditional brackishwater pond unstable. On average, the uniformity of the genus in both  brackishwater ponds are relatively evenly and genus of plankton to dominate the others genus.

scholarly journals Assessment and Composition of Fish in the River District Maro Merauke

2018 ◽  
Vol 73 ◽  
pp. 04006
Author(s):  
Edy H.P Melmambessy ◽  
Irianis L. Latuperissa ◽  
Marius Agustinus Welliken ◽  
Nova Suryawati Monika ◽  
Rosa Delima Pangaribuan
Keyword(s):  
Data Analysis ◽  
Species Composition ◽  
Diversity Index ◽  
Survey Method ◽  
Frequency Diversity ◽  
Lates Calcarifer ◽  
Dominance Index ◽  
Gill Net ◽  
Scomberomorus Commerson ◽  
Index Value

Maro River is one of the major rivers in Merauke Regency that has a width of about 43-900 m and length of 300 km. The purpose of this study is to find out the type and composition of fish caught using gill net in Maro River, Merauke Regency. This study was conducted in Maro River, Merauke Regency from May to June 2014. It was conducted using survey method. The data analysis included: species composition, relative abundance, availability frequency, diversity index and dominance index. The results of showed 1,084 fish in 17 species with the following composition; 490 of Kurtus gulliveri species (37,01%), 212 of Eleutheronema tetradactylum species (20,33%), 170 of Polydactylus plebeius species (16,30%), 75 of crassilabris Cinetodus species (7,19%), 64 of Cinetodus froggatti species (6,14%), 37 of Argyrosomus amoyensis species (3,55%), 20 of Mugil cephalus species (1,92%), 15 of Megalops cyprinoides species (1,53%), 15 of Thryssa scratchleyi species (1,4%), 12 of Lebtobrama sp species (1,15%), 9 of Lates calcarifer species (0,86%), 7 of Marilyna meraukensis species (0,67%), 7 of Scomberomorus commerson species (0,67%), 5 of Nibea squamosal species (0,48%), 4 of Rhinoptera javanica species (0,38%), 3 of Harpadon microchir species (0,29%) and 1 of Datnioides campbelli species (0,10%). Based on the availability frequency, there are 37 species with a percentage of 100%, 37 species with 67% and 7 species with 33%. The diversity of fish has a moderate value of 1<H’<3. The obtained dominance index value is close to 0, then it is stated that there is no species found to be dominant.

scholarly journals THE RELATIONSHIP OF NITRATE AND PHOSPHATE WITH ABUNDANCE OF EPIPELIC IN THE WATERS OF SUNGAITOHOR VILLAGE, REGENCY OF MERANTI ISLANDS, RIAU PROVINCE

2020 ◽  
Vol 3 (3) ◽  
pp. 225-235
Author(s):  
Ongki Okto Beranda ◽  
Bintal Amin ◽  
Sofyan Husein Siregar
Keyword(s):  
Community Structure ◽  
Correlation Coefficient ◽  
Water Area ◽  
Dominance Index ◽  
Average Value ◽  
A Value ◽  
Epipelic Diatoms ◽  
Index Value ◽  
Relationship Of ◽  
The Relationship

The study was conducted in August-October 2019. Aims to determine theconcentration of nitrate, phosphate, uniformity index, diversity and index of dominancy,abundance of epipelic diatoms and know the relationship between nitrate,phosphate and epipelic abundance diatoms in the water area of Sungaitohor DesaMeranti of Riau Islands district. The method used in this research is a surveymethod consisting of 4 research stations. Location of observation and sampling is in the waters of Muara Sungaitohor Kabupaten Meranti Islands. Basedon the results of this study of nitrateconcentrations in the waters of Sungaitohor Bekisar village 0,068-0,092 mg/l, phosphate concentrations ranged0,097-0,220 mg/L. The Epipelic diatom found in the water area of Sungaitohorvillage amounted to 14 types. As for the abundance of type diatomsepipelics ranged from 27,531.72– 40,531.72 ind/cm2. From theCalculation of the community structure diatoms epipelic obtained diversityindex value (H ') which indicates a low index value of h ' has a value of2.7527 and is at a range of 1 ≤ H ' ≤ 3. The uniformity index (E) indicatesthat an epipelic spread is not balanced with an average value of 0.3643uniformity and is at a range of value ≤ 0.5. Meanwhile, the Dominance index (D)shows the value of 0.1704 where the value of the area in the waters ofSungaitohor village does not dominate. The relationship of abundance ofepipelic diatoms with the concentration of nitrate is positive and very weak,with a correlation coefficient of R = 0.0030. While the relationship ofAbundance diatomic epipelic relationship with phosphate concentrations isnegative and weak, with a correlation coefficient r = 0.262. Abundance ofdiatomic epipelics is directly proportional to the concentration of nitrate andinversely proportional to phosphate concentrations

scholarly journals Dragonflies in Bawean Island Nature Reserve, Indonesia

2020 ◽  
Vol 10 (1) ◽  
pp. 45-50
Author(s):  
Abdu Rohman ◽  
Setyo Sulistyono ◽  
Wahyu Nuryati ◽  
Ahmad Arifandy ◽  
Aris Setiyanto
Keyword(s):  
Data Analysis ◽  
Data Collection ◽  
Dominant Species ◽  
Nature Reserve ◽  
Diversity Index ◽  
Moderate Level ◽  
Vertebrate Species ◽  
H Index ◽  
A Value ◽  
Observation Method

Bawaean Island is known for its endemic Bawa deer and other vertebrate species of mammals, avians and reptiles. However, little is known about the invertebrates, especially the Odonata (dragonflies) group. The aim of this study was to examine the variety of dragonflies on the Bawaean Island. The observation method was employed for data collection while the Shannon-Weinner Diversity Index was used for data analysis. A total of 23 dragonflies’ species consisting of four families were collected throughout the study. These include Coegnagrionidae (6 species), Libellulidae (13 species), Platycnemididae (2 species) and Aeshnidae (1 species). Ischnura senegalensis is the most dominant species. The diversity index (absolute H index) shows a moderate level of diversity in Bawean Island, with a value of 1,007.

scholarly journals Ecological Parameters as the Basis of Bivalvia Management in the Peace Ecosystem in Ponelo District, Islands North Gorontalo District

2020 ◽  
pp. 141
Author(s):  
Riskawati Nento ◽  
Hasim Hasim ◽  
Ramli Ramli
Keyword(s):  
Sampling Method ◽  
Diversity Index ◽  
Observation Point ◽  
Linear Quadratic ◽  
Thalassia Hemprichii ◽  
A Value ◽  
Sampling Locations ◽  
Seagrass Ecosystems ◽  
Ecological Parameters ◽  
Index Value

Ponelo Islands is an important area to be developed with the economic potential of fisheries and marine resources. This research was conducted in May-September 2019 aimed to find out Ecological Parameters as the Basis of Bivalvia Management in Seagrass Ecosystems. The sampling method is done by using the method used in determining the observation point is the linear quadratic transect method with sampling bivalves determined intentionally with a systematic perpendicular direction using a transect measuring 1x1 m. All bivalves contained in transects / quadrants are counted and identified. The sampling locations were divided into 4 (four) stations, namely Station I (Otiola Village), Station II (Ponelo Village), Station III (Malambe Village), and Station IV (Tihengo Village). Observations at the study site found several types of seagrass ecosystems including Enhalus acoroides, Halodule pinifolia, Thalassia hemprichii, and Cymodocea raotundata. Furthermore, 8 (eight) types of bivalves were found which were divided into 4 (four) stations in Ponelo Islands, namely Isognomon isognomum, Pinna muricata, Semele crenulata, Tellina virgata, Trachycardium subrugosum, Spondylus tenellus, Tapes sulcarius, Anadara pilula. The highest abundance index value is Tellina virgata found in Otiola Village with a value of 77.78%. The dominance index value for the highest is in Ponelo Village with a value of 0.88 in the high category. diversity index (D') with a value of 0.63 found in the medium category Malambe village. Keywords: Bivalvia, Seagrass, Abundance, Dominance, Diversity

scholarly journals Perifiton Community Structure in Citarik River

2020 ◽  
pp. 1-8
Author(s):  
Heti Herawati ◽  
Nisa Hidayati Fitri ◽  
Zahidah . ◽  
Asep Sahidin ◽  
Izza Mahdiana Apriliani ◽  
...  
Keyword(s):  
Community Structure ◽  
Research Method ◽  
Diversity Index ◽  
Survey Method ◽  
Chemical Parameters ◽  
Dominance Index ◽  
Periphyton Community ◽  
Physical And Chemical Parameters ◽  
Index Value ◽  
Physical And Chemical

The purpose of this research is to determine the condition of waters in the Citarik River with the periphyton community as a bio indicator. This research was conducted from March-April 2019. The research method used was a survey method at 4 station points, five times sampling with a span of 7 days. The smallest periphyton abundance is in station IV which is 22 ind/cm2 and the most is in station I which is 18278 ind/cm2. Comparison of species deficit values at each station is different, this is influenced by different physical and chemical parameters. The dominance index value in the waters of the Citarik River ranges from 0.1 to 0.8 and the diversity index value ranges from 0.2 to 0.9. The results showed the Citarik River was in a mildly polluted condition.

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